Presentation on theme: "Succession Trophic Levels Food Webs Biomes. Series of predictable changes that occur over time in response to disturbances. Two types Primary –Occurs."— Presentation transcript:
Succession Trophic Levels Food Webs Biomes
Series of predictable changes that occur over time in response to disturbances. Two types Primary –Occurs on “new” ground (little/no soil) Glacier melt Volcanic lava/ash Secondary Disturbance over existing soil (ex. old farmland)
Occurs where no ecosystem was before. On rocks, cliffs Soil building occurs
Soil particle sizes: how they are classified:
Volcano adding new land to Hawaii
Lichens begin growing
Primary succession can be seen happening on the sidewalks. If left alone, even NYC would return to a cement filled woodland.
Grasses and other species begin to cover in subsequent years
Decomposers (bacteria and fungi) Producers (Plants) Primary Consumers (Herbivores – eat plants) Secondary Consumers (Carnivores – eat herbivores) Tertiary Consumers (Carnivores – eat carnivores) Top two also contain Omnivores (Eat plants and animals)
How the numbers of these type organisms actually compare to each other.
An example of a Food Web Shows how many organisms are interconnected by different paths.
Food chains are different from food webs. Chains only show ONE path of energy flow.